720763863 has 8 divisors (see below), whose sum is σ = 961330800. Its totient is φ = 480353088.

The previous prime is 720763859. The next prime is 720763867. The reversal of 720763863 is 368367027.

It is an interprime number because it is at equal distance from previous prime (720763859) and next prime (720763867).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 720763863 - 2² = 720763859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720763867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27808 + ... + 47061.

It is an arithmetic number, because the mean of its divisors is an integer number (120166350).

Almost surely, 2^720763863 is an apocalyptic number.

720763863 is a deficient number, since it is larger than the sum of its proper divisors (240566937).

720763863 is a wasteful number, since it uses less digits than its factorization.

720763863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78081.

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 720763863 is about 26847.0457033916. The cubic root of 720763863 is about 896.5977983311.

The spelling of 720763863 in words is "seven hundred twenty million, seven hundred sixty-three thousand, eight hundred sixty-three".